I thought some of the creepiest scenes didn't even involve Leatherface,
but just the locals themselves... The greasy spoon diner, the sheriff, the family... Yikes.

The scene with the evil Texas sheriff screaming at the kid with the glasses in the mud (outside the house, was it?) was intense! And they had to worry about a dude with a chainsaw and a mask made out of their dead buddy's skin on top of that!!